Uttar Pradesh's former chief secretary Akhand Pratap Singh, arrested on Tuesday in connection with a disproportionate assets case, was on Wednesday remanded in 12-day Central Bureau of Investigation custody.

Special Judge I K Kochhar sent Singh to the custody of the agency till October 8 as the CBI sought his custodial interrogation into the matter so as to take him to different states where Singh allegedly owned properties.

While the probe agency had sought for 14 days custody, Singh's counsel had opposed CBI's contention to seek the custodial interrogation of his client.

Singh, a high-profile former bureaucrat, who was once voted the most corrupt officer by the Uttar Pradesh IAS Association, is accused of amassing disproportionate wealth to his known sources of income through corrupt means.

According to the corruption case registered against him in 2005, Singh acquired as many as 84 immovable properties in Delhi, Uttar Pradesh and Uttarakhand worth Rs 200 crore.

He was also accused of forging the signatures of his late father and a friend for transferring the properties and routing financial transactions through fictitious bank accounts.

After the case against Singh was registered, CBI had in 2005 also conducted raids at 16 places and allegedly found huge properties in his name and in the name of his daughter.

He was arrested by the agency sleuths from his Vasant Kunj farm house while he attempted to flee from there.

His arrest was made since he was not co-operating with the investigations and further there were proof suggesting that he had tampered with the evidence pertaining to the case, the CBI had said.